Date: Thu, 27 Oct 2011 10:50:51 +0400 From: Emil Muratov <gpm@hotplug.ru> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-net@freebsd.org, Hooman Fazaeli <fazaeli@sepehrs.com>, Jason, Wolfe <nitroboost@gmail.com>, Mike Tancsa <mike@sentex.net> Subject: Re: Intel 82574L interface wedging on em 7.1.9/7.2.3 when MSIX enabled Message-ID: <4EA8FF4B.3070704@hotplug.ru> In-Reply-To: <CAJ-Vmo=%2B6NcDQXeoabWtewfDvnhMNaZcnGE5WzncT9WBk18H3w@mail.gmail.com> References: <CAAAm0r0RXEJo4UiKS=Ui0e5OQTg6sg-xcYf3mYB5%2Bvk8i8557w@mail.gmail.com> <4E8F157A.40702@sentex.net> <CAAAm0r2JH43Rct7UxQK2duH1p43Nepnj5mpb6bXo==DPayhJLg@mail.gmail.com> <4E8F51D4.1060509@sentex.net> <CACqU3MVwLaepFymZJkaVk6p=SpykGhqs=VYFjLh9fP9S=AxDhg@mail.gmail.com> <CAAAm0r1DKvoL9=Ket9up=4%2B5xiCzTTZJK99FhF9jcCA28B0M%2BA@mail.gmail.com> <CAAAm0r3XdsMHZh%2BP_NF-txZasdExzwZ8ymmGQgGhJQds0fOiBQ@mail.gmail.com> <CAAAm0r1iS3z-7CBJ=xYDf%2BJOA1Q2nU0O54Twbyb7FjvgWHjKVw@mail.gmail.com> <4EA7E203.3020306@sepehrs.com> <CAAAm0r3Nr2t8cCetPkFnLQ-3KwqHw_0SpqbtvYPRUkSP=9n8CA@mail.gmail.com> <4EA80818.3030504@sentex.net> <4EA80F88.4000400@hotplug.ru> <CAJ-Vmo=%2B6NcDQXeoabWtewfDvnhMNaZcnGE5WzncT9WBk18H3w@mail.gmail.com>
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>> Hi All, >> I've got almost the same problem with intel 82574L based nic. My platform is >> nvidia ion running Atom 1.6 and nic is an external PCI-express adapter. >> Unlike Jason's case mine is always stuck in receiving traffic, it's Ierrs >> increasing while Ipkts not. Thanks to Jason's script I can see those locks >> and interface flapping every several hours. My system is not a heavy loaded >> server but just a home nas/router, usually routing at 100 mbps or less. >> Nither disabling MSIX nor tuning txd rxd doesn't help me. >> > Hi, > > When this occurs, does this completely lock up with RX traffic? Ie, > _no_ valid RX traffic occurs? > If so, does the error count increase 1:1 with what traffic you're > trying to send to it? > Hi Adrian Yes, it's completely locked - ping packet loss to the interface is 100%, I also managed to run tcpdump -ni em0 and there were only outgoing packets from the interface but no packets arrived to the interface. As for the error counter ratio - I'm not sure about it, don't know how check this besides comparing counters on the switch with interface, but it's a little bit complicated to catch in time.
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